Holei Sea Arch

May 31, 2006

Sea_arch-5576 copy

Provided and copyright by: Rick Stankiewicz
Summary authors & editors: Rick Stankiewicz

The photo above showing a relatively young sea arch was taken from Hawaii's Volcano National Park, on the Big Island of Hawaii, on February 5, 2006. This arch (Holei Sea Arch) is located at mileage marker 20, near the end of the Chain of Craters Road. It's likely only several hundred years old and is made of igneous rock (basalt), formed by lava from the Kilauea Volcano and the sculpting power of the Pacific Ocean. Basalt is composed largely of microscopic grains of a calcium-sodium (plagioclase) feldspar, pyroxene and olivine, but no quartz.

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